WO2007108762A1 - Protection against mould attack on untreated timber - Google Patents
Protection against mould attack on untreated timber Download PDFInfo
- Publication number
- WO2007108762A1 WO2007108762A1 PCT/SE2007/050154 SE2007050154W WO2007108762A1 WO 2007108762 A1 WO2007108762 A1 WO 2007108762A1 SE 2007050154 W SE2007050154 W SE 2007050154W WO 2007108762 A1 WO2007108762 A1 WO 2007108762A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fungicide
- means according
- pigment
- quaternary ammonium
- ammonium salt
- Prior art date
Links
- 230000000855 fungicidal effect Effects 0.000 claims abstract description 24
- 239000000417 fungicide Substances 0.000 claims abstract description 24
- 239000000049 pigment Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000003125 aqueous solvent Substances 0.000 claims abstract description 9
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims abstract description 5
- 239000010876 untreated wood Substances 0.000 claims abstract description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052796 boron Inorganic materials 0.000 claims abstract description 4
- 150000001768 cations Chemical class 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002023 wood Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 125000001453 quaternary ammonium group Chemical class 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- -1 aryl ammonium salt Chemical class 0.000 claims description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 229960000686 benzalkonium chloride Drugs 0.000 claims description 4
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical group [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 claims description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical group 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 230000001680 brushing effect Effects 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 239000001023 inorganic pigment Substances 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 150000007522 mineralic acids Chemical class 0.000 claims description 2
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- 239000001034 iron oxide pigment Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 description 15
- 239000000725 suspension Substances 0.000 description 8
- 239000003755 preservative agent Substances 0.000 description 6
- 239000003171 wood protecting agent Substances 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002335 preservative effect Effects 0.000 description 3
- 241000233866 Fungi Species 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 235000019198 oils Nutrition 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- JLHMJWHSBYZWJJ-UHFFFAOYSA-N 1,2-thiazole 1-oxide Chemical compound O=S1C=CC=N1 JLHMJWHSBYZWJJ-UHFFFAOYSA-N 0.000 description 1
- FKKAGFLIPSSCHT-UHFFFAOYSA-N 1-dodecoxydodecane;sulfuric acid Chemical compound OS(O)(=O)=O.CCCCCCCCCCCCOCCCCCCCCCCCC FKKAGFLIPSSCHT-UHFFFAOYSA-N 0.000 description 1
- PUSPAPGHKSLKKH-UHFFFAOYSA-N 2-methyl-1,2-thiazolidin-3-one Chemical compound CN1SCCC1=O PUSPAPGHKSLKKH-UHFFFAOYSA-N 0.000 description 1
- JUKKWTQZNPHOCO-UHFFFAOYSA-N 4-octyl-1,2-thiazolidin-3-one Chemical compound CCCCCCCCC1CSNC1=O JUKKWTQZNPHOCO-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000012505 colouration Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000012633 leachable Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- JPMIIZHYYWMHDT-UHFFFAOYSA-N octhilinone Chemical compound CCCCCCCCN1SC=CC1=O JPMIIZHYYWMHDT-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- FXZUKHDLJABRQU-UHFFFAOYSA-N sulfuric acid;1-tetradecoxytetradecane Chemical compound OS(O)(=O)=O.CCCCCCCCCCCCCCOCCCCCCCCCCCCCC FXZUKHDLJABRQU-UHFFFAOYSA-N 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/02—Amines; Quaternary ammonium compounds
- A01N33/12—Quaternary ammonium compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/20—Compounds of alkali metals or ammonium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/163—Compounds of boron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/02—Staining or dyeing wood; Bleaching wood
Definitions
- the present invention relates to a means and a method for temporary protection of untreated wood articles against mould attack and wood articles treated with the protection means.
- Wood articles of various kind in particular prefabricated wood elements and wood- built houses and sections of wood-built houses manufactured in a factory are often delivered and assembled unpainted.
- the reason for this is mainly to enable an individual choice of colouration at the site of assembly.
- paint applied at the manufacturing site is at risk of being impaired during transport and that the damage have to be repaired at the assembly site at an extra cost as well as the risk of disturbing colour variations.
- Untreated wood articles are at risk of mould attack after use and assembly outdoors, respectively, unless they are immediately painted with a paint that protects them against mould attack. Paint on wood articles and timber already attacked by mould, which are comprised by the term "wood articles”, with a paint protecting against mould attack is most often insufficient to kill mould and mould spores already present in the wood.
- mould attack can continue under the applied layer of paint and result in great damage.
- mould By mould is meant herein all kinds of fungi growth on timber, such as blue discolouration, white rot and brown rot.
- Salts of quaternary amines such as benzalkonium chloride are known for their mould killing and mould inhibiting properties. They are used in wood preservatives in combination with other mould inhibiting substances such as copper salts.
- Still another object of the invention is to treat wood articles correspondingly.
- a means of the aforementioned kind comprising a quaternary ammonium salt-type fungicide dissolved in an aqueous solvent, and pigment suspended in the aqueous solvent, but not comprising binding agent and fungicide comprising boron or metal cation.
- the means of the invention comprises no fungicide other than the fungicide of quaternary ammonium salt-type, in any event not other fungicide in a total amount of more than 1 % by weight of the amount of quaternary ammonium salt.
- the fungicide of quaternary ammonium salt-type according to the invention is preferably a trialkyl aryl ammonium salt with the alkyl residues R , R and R . It is
- R and R are same or different C 1 -C 6 alkyl, most preferred that one or both of R and R are methyl. It is preferred that R is an alkyl residue four or more
- the fungicide is a mixture of at least two quaternary ammonium salts of aforementioned kind, differing in regard of the length of R , the share of quaternary amine with shorter R preferably being the larger one.
- the aryl residue is preferably phenyl or p-tolyl, most preferred phenyl.
- the salt is preferably a salt of an inorganic acid such as sulfuric acid, hydrochloric acid and hydrobromic acid. Most preferred is hydrochloric acid.
- the fungicide is one known by the trade name benzalkonium chloride, which is a mixture of quaternary ammonium salts of the aforementioned kind.
- the aqueous solvent according to the invention is preferably water, but mixtures of water and of an alcohol chosen from methanol, ethanol, propanol, isopropanol and n- butanol is also preferred.
- the pigment according to the invention is a pigment is of low water solubility. By low water solubility is meant herein that the pigment contains less than 10 % by weight of leachable parts when 1 g thereof is extracted in 1 L of water for 24 h at room temperature.
- the pigment is a powder whose particle size can vary within wide limits, such as between 0.2 ⁇ m and 15 ⁇ m (weight average) and up to 30 ⁇ m and even up to 150 ⁇ m (weight average).
- the main function of the pigment is to protect the fungicide of quaternary ammonium salt-type against decomposition due to the action of UV light from solar radiation.
- binding agent is meant herein all kinds of agents that make the paint' s pigment particles cohere and agents forming paint layers with them, such as synthetic and natural resins, e.g. acrylates, polyuretanes, polyesters, melamines, acryl modified polysiloxanes, oils of synthetic and/or natural origin setting on contact with air, such as linseed oil, natural rubber synthetic rubber, etc.
- synthetic and natural resins e.g. acrylates, polyuretanes, polyesters, melamines, acryl modified polysiloxanes, oils of synthetic and/or natural origin setting on contact with air, such as linseed oil, natural rubber synthetic rubber, etc.
- a method of the aforementioned kind comprising applying on an untreated wooden article a suspension of a pigment in an aqueous solvent in which a fungicide of quaternary ammonium salt-type is dissolved, wherein the suspension does not comprise binding agent or boron or metal cation comprising fungicide, and wherein the suspension preferably does not comprise any other fungicide than the fungicide of quaternary ammonium salt-type, wherein the suspension is applied in such an amount that the amount of applied fungicide of quaternary ammonium salt-type is from 2 g/m 2 to 15 g/m 2 or more, and drying the applied suspension.
- the applied amount of pigment is preferably capable of absorbing at least 95 %, in particular at least 98 % or more, of the natural UV radiation.
- UV radiation is meant the radiation generated by the sun of a wavelength of from 100 m ⁇ to 400 m ⁇ .
- the applied amount of pigment is capable of absorbing at least 90 % of the visible light in the range of from 400 ⁇ m to 700 ⁇ m.
- the suspension can comprise water soluble UV absorbent, e.g. of the kind disclosed in US 2005/0180932 Al.
- the suspension is sprayed onto the wooden articles. It can also be applied by brushing or by dipping or by a combination of different procedures.
- a wooden article treated by the method of the invention is also disclosed.
- a wooden article In a mid-Swedish outdoor climate such a wooden article will remain essentially free from the attack of mould fungi for at least six months, preferably at least one year. It can be painted on at any time with any paint suitable for painting untreated wood while one does not have to fear a deterioration of the properties of the paint layer.
- Tonex® is intended for use in tinting by hand of waterborne latex, alkyde and oil paints, and is obtained in various colours (with different colouring pigments). It contains pigment and only non-hardening additives such as kokomonoethanolamine ethoxylate, kathon, sodium dodecylether sulfate, sodium tetradecylether sulfate, kokos- dimethyl betaine, alkyl monoethanol amide toxylate (dispersant), n- octyl-isothiazoline-3-one, 2-methyl-2H-isothiazoline-3-one (preservative) (less than 0.04 %).
- non-hardening additives such as kokomonoethanolamine ethoxylate, kathon, sodium dodecylether sulfate, sodium tetradecylether sulfate, kokos- dimethyl betaine, alkyl monoethanol amide toxylate (dispersant), n
- Tonex® can be used, e.g., Symphony tinting paste (Tikkurila Coatings AB, Spanga, Sweden), also a waterborne tinting paste.
- Symphony tinting paste Tikkurila Coatings AB, Spanga, Sweden
- preservative of isothiazolone type.
- the amount of preservative in Tonex and Symphony tinting paste is adjusted to protect these products against mould attack before use, but is entirely insufficient for the protection of wood surfaces treated with these products.
- Lightproof inorganic pigments especially pigments based on iron oxide, are preferred.
- Tongued and grooved board was spray-painted with the wood preservative according to the invention to full coverage.
- the timber was placed outdoors in a tree-shaded place for 6 months (March to September) at an angle of about 45 degrees with the painted side facing upwards and to the South. Repeated lawn moving was performed in the immediate vicinity of the samples.
- the samples were examined by stereo microscopy in regard of mould attack. The samples were then restored to their old site, and the test continued for an additional two months. The samples were subsequently examined.
- the samples were compared with tongued and grooved board painted with ordinary house paint (Table 1).
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Plant Pathology (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Means for temporary protection of untreated wood articles against mould attack, the means comprising quaternary ammonium salt as fungicide dissolved in an aqueous solvent and in the aqueous solvent suspended pigment, but not comprising binding agent or fungicide comprising boron or metal cation. Also disclosed is a corresponding method.
Description
Description PROTECTION AGAINST MOULD ATTACK ON UNTREATED
TIMBER Field of the Invention
[0001] The present invention relates to a means and a method for temporary protection of untreated wood articles against mould attack and wood articles treated with the protection means.
Background of the Invention
[0002] Wood articles of various kind, in particular prefabricated wood elements and wood- built houses and sections of wood-built houses manufactured in a factory are often delivered and assembled unpainted. The reason for this is mainly to enable an individual choice of colouration at the site of assembly. Another reason is that paint applied at the manufacturing site is at risk of being impaired during transport and that the damage have to be repaired at the assembly site at an extra cost as well as the risk of disturbing colour variations. Untreated wood articles are at risk of mould attack after use and assembly outdoors, respectively, unless they are immediately painted with a paint that protects them against mould attack. Painting on wood articles and timber already attacked by mould, which are comprised by the term "wood articles", with a paint protecting against mould attack is most often insufficient to kill mould and mould spores already present in the wood. At conditions favourable to mould formation and spread, i.e. damp weather at temperatures above 5 °C, mould attack can continue under the applied layer of paint and result in great damage.
[0003] Mould attack on wood articles intended for the specified use can actually be prevented by treatment with known wood preservatives. However, these wood preservatives are not intended to be painted on. If they are painted on there is a risk of the components in the wood preservative, e.g. copper salts, bleeding through, and of colour changes resulting from that. Furthermore, there is a risk of deterioration of the absorptive capability of the wood and thereby of paint adhesion and/or penetration into the wood.
[0004] By mould is meant herein all kinds of fungi growth on timber, such as blue discolouration, white rot and brown rot.
[0005] Salts of quaternary amines such as benzalkonium chloride are known for their mould killing and mould inhibiting properties. They are used in wood preservatives in combination with other mould inhibiting substances such as copper salts.
Objects of the Invention
[0006] It is an object of the invention to provide a means that can be applied on wood articles intended for use or assembly outdoors, for temporarily protecting them against mould attack without affecting the property of the wood articles that allows the application of any paint at a later point in time without having to fear of damage of the paint and/or deteriorated adhesion.
[0007] It is another object of the invention to provide a method for treatment of wood articles for temporary protection against mould attack without affecting the property of the wood articles that allows the application of any paint at a later point in time without having to fear of damage of the paint and/or deteriorated adhesion.
[0008] Still another object of the invention is to treat wood articles correspondingly.
[0009] Further objects of the invention will become evident from the following description of the invention, a number of preferred embodiments thereof, and the appended claims.
Summary of the Invention
[0010] According to the present invention is disclosed a means of the aforementioned kind comprising a quaternary ammonium salt-type fungicide dissolved in an aqueous solvent, and pigment suspended in the aqueous solvent, but not comprising binding agent and fungicide comprising boron or metal cation. Preferably, the means of the invention comprises no fungicide other than the fungicide of quaternary ammonium salt-type, in any event not other fungicide in a total amount of more than 1 % by weight of the amount of quaternary ammonium salt.
[0011] The fungicide of quaternary ammonium salt-type according to the invention is preferably a trialkyl aryl ammonium salt with the alkyl residues R , R and R . It is
1 9 preferred that R and R are same or different C 1 -C 6 alkyl, most preferred that one or both of R and R are methyl. It is preferred that R is an alkyl residue four or more
1 9 carbon atoms longer than the longest of R and R , preferably a C 12 -C 18 alkyl residue.
According to a particularly preferred aspect of the invention, the fungicide is a mixture of at least two quaternary ammonium salts of aforementioned kind, differing in regard of the length of R , the share of quaternary amine with shorter R preferably being the larger one. The aryl residue is preferably phenyl or p-tolyl, most preferred phenyl. The salt is preferably a salt of an inorganic acid such as sulfuric acid, hydrochloric acid and hydrobromic acid. Most preferred is hydrochloric acid.
[0012] According to a preferred aspect of the invention the fungicide is one known by the trade name benzalkonium chloride, which is a mixture of quaternary ammonium salts of the aforementioned kind.
[0013] The aqueous solvent according to the invention is preferably water, but mixtures of water and of an alcohol chosen from methanol, ethanol, propanol, isopropanol and n- butanol is also preferred.
[0014] The pigment according to the invention is a pigment is of low water solubility. By low water solubility is meant herein that the pigment contains less than 10 % by weight of leachable parts when 1 g thereof is extracted in 1 L of water for 24 h at room temperature. The pigment is a powder whose particle size can vary within wide limits, such as between 0.2 μm and 15 μm (weight average) and up to 30 μm and even up to 150 μm (weight average). The main function of the pigment is to protect the fungicide of quaternary ammonium salt-type against decomposition due to the action of UV light from solar radiation. Thus preferred is a pigment with high absorption capability for UV radiation and resistance against decomposition caused by the action of oxygen, light, moisture etc.
[0015] By binding agent is meant herein all kinds of agents that make the paint' s pigment particles cohere and agents forming paint layers with them, such as synthetic and natural resins, e.g. acrylates, polyuretanes, polyesters, melamines, acryl modified polysiloxanes, oils of synthetic and/or natural origin setting on contact with air, such as linseed oil, natural rubber synthetic rubber, etc.
[0016] According to the invention is also provided a method of the aforementioned kind, comprising applying on an untreated wooden article a suspension of a pigment in an aqueous solvent in which a fungicide of quaternary ammonium salt-type is dissolved, wherein the suspension does not comprise binding agent or boron or metal cation comprising fungicide, and wherein the suspension preferably does not comprise any other fungicide than the fungicide of quaternary ammonium salt-type, wherein the suspension is applied in such an amount that the amount of applied fungicide of quaternary ammonium salt-type is from 2 g/m2 to 15 g/m2 or more, and drying the applied suspension. The applied amount of pigment is preferably capable of absorbing at least 95 %, in particular at least 98 % or more, of the natural UV radiation. By UV radiation is meant the radiation generated by the sun of a wavelength of from 100 mμ to 400 mμ. Preferably the applied amount of pigment is capable of absorbing at least 90 % of the visible light in the range of from 400 μm to 700 μm. According to a preferred aspect of the invention the suspension can comprise water soluble UV absorbent, e.g. of the kind disclosed in US 2005/0180932 Al. Preferably the suspension is sprayed onto the wooden articles. It can also be applied by brushing or by dipping or by a combination of different procedures.
[0017] According to the invention is also disclosed a wooden article treated by the method of the invention. In a mid-Swedish outdoor climate such a wooden article will remain essentially free from the attack of mould fungi for at least six months, preferably at least one year. It can be painted on at any time with any paint suitable for painting untreated wood while one does not have to fear a deterioration of the properties of the paint layer.
Description of Preferred Embodiments EXAMPLE 1
[0018] Production of wood preservative according to the invention. To 1 L of soft tap water 70 g of benzalkonium chloride is added and dissolved while stirring. To the solution 90 g of Oxidrδd Tonex® (Alcro) tinting paste is gradually added while stirring. For storage the suspension is transferred to a plastic can with a cover. At least one quarter of the volume of the can is left unfilled. Before use the can is vigorously shaken/stirred to resuspend any sedimented pigment.
[0019] Tonex® is intended for use in tinting by hand of waterborne latex, alkyde and oil paints, and is obtained in various colours (with different colouring pigments). It contains pigment and only non-hardening additives such as kokomonoethanolamine ethoxylate, kathon, sodium dodecylether sulfate, sodium tetradecylether sulfate, kokos- dimethyl betaine, alkyl monoethanol amide toxylate (dispersant), n- octyl-isothiazoline-3-one, 2-methyl-2H-isothiazoline-3-one (preservative) (less than 0.04 %).
[0020] In stead of Tonex® can be used, e.g., Symphony tinting paste (Tikkurila Coatings AB, Spanga, Sweden), also a waterborne tinting paste. In addition of pigment and water it contains 1-5 % by weight of surface active compounds (dispersants) and less than 0.0015 % preservative (of isothiazolone type). The amount of preservative in Tonex and Symphony tinting paste is adjusted to protect these products against mould attack before use, but is entirely insufficient for the protection of wood surfaces treated with these products.
[0021] Lightproof inorganic pigments, especially pigments based on iron oxide, are preferred.
EXAMPLE 2
[0022] Treatment of an unpainted wooden article with the wood preservative according to the invention. By means of a conventional low pressure spray gun the wood preservative according to Example 1 is sprayed on, in an amount of 0.2 L/m , the outer walls of the modules of a prefabricated wood-built house, in a production hall with good ventilation at a temperature of 25 °C. The modules are then packed, loaded onto a truck, transported to the assembly site and assembled to form the prefabricated house. The prefabricated house is traditionally painted when the weather so permits, e.g. after a period of 7 months from assembling in October of the preceding year.
EXAMPLE 3
[0023] Test of the wood preservative according to the invention. Tongued and grooved board was spray-painted with the wood preservative according to the invention to full
coverage. The timber was placed outdoors in a tree-shaded place for 6 months (March to September) at an angle of about 45 degrees with the painted side facing upwards and to the South. Repeated lawn moving was performed in the immediate vicinity of the samples. The samples were examined by stereo microscopy in regard of mould attack. The samples were then restored to their old site, and the test continued for an additional two months. The samples were subsequently examined. The samples were compared with tongued and grooved board painted with ordinary house paint (Table 1).
[0024]
[0025] Table 1. Test of mould attack [Table 0001] [Table ] Table 1
[0026]
Claims
Claims
[0001] Means for temporary protection of untreated wood articles against mould attack, the means comprising quaternary ammonium salt as fungicide, preferably a salt of an inorganic acid such as sulfuric acid, hydrobromic acid and in particular hydrochloric acid, dissolved in an aqueous solvent and pigment suspended in the aqueous solvent, but not comprising binding agent or fungicide comprising boron or metal cation.
[0002] The means according to claim 1, not comprising, in addition to quaternary ammonium salt as a fungicide, other fungicide in a total amount of more than 1 % by weight of the amount of quaternary ammonium salt.
[0003] The means according to claim 2, wherein the quaternary ammonium salt is a trialkyl aryl ammonium salt or a mixture of trialkyl aryl ammonium salts.
[0004] The means according to claim 3, wherein alkyl is named R1, R2 and R3, wherein
1 9 1
R and R are same or different C -C alkyl, wherein preferably one or both of R and R are methyl, wherein R is an alkyl residue four or more carbon atoms
1 9 longer than the longest of R and R , preferably a C -C alkyl residue. [0005] The means according to claim 4, wherein the fungicide is a mixture of at least two quaternary ammonium salts, differing in regard of the length of R , the share of quaternary amine with shorter R3 preferably being the larger one. [0006] The means according to claim 5, wherein the aryl residue preferably is phenyl or p-tolyl, most preferred phenyl.
[0007] The means according to claim 1, wherein the fungicide is benzalkonium chloride.
[0008] The means according to any of claims 1 to 7, wherein the aqueous solvent is water or a mixture of water and of an alcohol chosen from methanol, ethanol, propanol, isopropanol, n-butanol. [0009] The means according to any of claims 1 to 8, wherein the pigment is of low water solubility, preferably a pigment insoluble in water. [0010] The means according to claim 9, wherein the particle size of the pigment is from
0.2 μm to 15 μm (weight average). [0011] The means according to any of claims 1 to 10, wherein the pigment is an inorganic pigment, in particular an iron oxide pigment. [0012] The means according to any of claims 1 to 11, wherein the means comprises from 3 to 15 % by weight of quaternary ammonium salt-type fungicide and from
5 to 30 % by weight of pigment. [0013] A method for providing a wooden article with temporary protection against mould attack, wherein the method comprises treating the wooden article with the means according to any of claims 1 to 12 by spraying, brushing or dipping or a
combination of these procedures. [0014] The method according to claim 13, wherein the amount of applied fungicide is from 2 g/m to 15 g/m . [0015] Wood articles treated with the product according to any of claims 1 to 12.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07716123A EP1998943A4 (en) | 2006-03-18 | 2007-03-14 | Protection against mould attack on untreated timber |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0600623A SE0600623L (en) | 2006-03-18 | 2006-03-18 | Protection against mold infestation on untreated wood |
SE0600623-3 | 2006-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007108762A1 true WO2007108762A1 (en) | 2007-09-27 |
Family
ID=38048097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2007/050154 WO2007108762A1 (en) | 2006-03-18 | 2007-03-14 | Protection against mould attack on untreated timber |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1998943A4 (en) |
RU (1) | RU2429118C2 (en) |
SE (1) | SE0600623L (en) |
WO (1) | WO2007108762A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012103580A1 (en) * | 2011-02-01 | 2012-08-09 | Danip Pty Ltd | Composition and method for treating wood |
JP2012219069A (en) * | 2011-04-11 | 2012-11-12 | Neos Co Ltd | Method for controlling mold, and liquid mold-controlling agent composition |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4764214A (en) * | 1986-04-19 | 1988-08-16 | Dr. Wolman Gmbh | Wood preservatives containing 2-iodobenzanilide |
FR2777422A1 (en) * | 1998-04-17 | 1999-10-22 | Cecil | Treatment of cut timber to prevent fungal and mold attack |
US6464764B1 (en) * | 1998-02-06 | 2002-10-15 | Lonza Ag | Protective agents for wood |
US20040220275A1 (en) * | 2001-08-31 | 2004-11-04 | Michael Lutzeler | Fungicidal compositions of disinfecting and preserving agents |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5641726A (en) * | 1993-06-09 | 1997-06-24 | Lonza, Inc. | Quaternary ammonium carboxylate and borate compositions and preparation thereof |
DE29923154U1 (en) * | 1998-07-12 | 2000-03-30 | Imprägnierwerk Wülknitz GmbH, 01609 Wülknitz | Protective treatment for wood |
DE10125181A1 (en) * | 2001-05-23 | 2002-11-28 | Remmers Bauchemie Gmbh | Biocidal wood protectant composition with good penetration properties, comprising solution of quaternary ammonium compound in hydrocarbon and auxiliary solvent |
-
2006
- 2006-03-18 SE SE0600623A patent/SE0600623L/en unknown
-
2007
- 2007-03-14 RU RU2008137193/05A patent/RU2429118C2/en active
- 2007-03-14 EP EP07716123A patent/EP1998943A4/en not_active Withdrawn
- 2007-03-14 WO PCT/SE2007/050154 patent/WO2007108762A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4764214A (en) * | 1986-04-19 | 1988-08-16 | Dr. Wolman Gmbh | Wood preservatives containing 2-iodobenzanilide |
US6464764B1 (en) * | 1998-02-06 | 2002-10-15 | Lonza Ag | Protective agents for wood |
FR2777422A1 (en) * | 1998-04-17 | 1999-10-22 | Cecil | Treatment of cut timber to prevent fungal and mold attack |
US20040220275A1 (en) * | 2001-08-31 | 2004-11-04 | Michael Lutzeler | Fungicidal compositions of disinfecting and preserving agents |
Non-Patent Citations (1)
Title |
---|
See also references of EP1998943A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012103580A1 (en) * | 2011-02-01 | 2012-08-09 | Danip Pty Ltd | Composition and method for treating wood |
JP2012219069A (en) * | 2011-04-11 | 2012-11-12 | Neos Co Ltd | Method for controlling mold, and liquid mold-controlling agent composition |
Also Published As
Publication number | Publication date |
---|---|
SE529154C2 (en) | 2007-05-15 |
RU2008137193A (en) | 2010-04-27 |
SE0600623L (en) | 2007-05-15 |
EP1998943A4 (en) | 2011-06-15 |
RU2429118C2 (en) | 2011-09-20 |
EP1998943A1 (en) | 2008-12-10 |
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